Data processing apparatus and method

• US 20030046691A1
• Filed: 08/27/2002
• Published: 03/06/2003
• Est. Priority Date: 08/31/2001
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nakagawa, Toshiyuki
• Granted Patent: US 7,690,018 B2
• Time in Patent Office: Days
• US Class Current: 725/38
• CPC Class Codes: H04N 21/23412 for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/25825 involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/25833 involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities allocation of resources considering hardware capabilities in multiprogramming arrangements G06F9/5044; allocation of resources considering software capabilities in multiprogramming arrangements G06F9/5055
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/44012 involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
• CPC Class Codes: H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612
• CPC Class Codes: H04N 21/6582 Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number arrangements where receivers interact with the broadcast H04H20/38
• CPC Class Codes: H04N 21/8153 comprising still images, e.g. texture, background image

Abstract

A device information analysis circuit 108 analyzes type and capability of reception terminal, and in accordance with the result of analysis, a scene/object conversion circuit 1002 refers to object description data 103 and scene description data 104, and determines whether or not display positions and placement (layout of the respective objects in a display screen of the reception terminal) of respective objects must be changed. If it is determined that the display position and placement must be changed, the display positions and the placement of the respective objects described in the scene description data 104 and the object description data 103 are converted in accordance with the result of analysis by the device information analysis circuit 108.

Claims

1. A data processing apparatus for delivering coded multimedia data to a reception terminal connected to the apparatus via a network, comprising:

analysis means for receiving device information of said reception terminal and analyzing type and capability of said reception terminal;

change means for changing first object description data and first scene description data constructing said multimedia data in accordance with the result of analysis by said analysis means, thereby changing object(s) constructing said multimedia data and a layout of the object(s) in a display screen of said reception terminal and generating second object description data and second scene description data; and

selection means for selecting a coded bit stream of the object(s) from predetermined storage device in correspondence with change by said change means,

wherein said second object description data and said second scene description data are encoded, and wherein the result of coding is multiplexed with the coded bit stream of the object(s) selected by said selection means thereby coded multimedia data is generated, further wherein the coded multimedia data is delivered to said reception terminal.

3. The data processing apparatus according to claim 1, wherein said change means changes a translation field of the object(s) included in said first scene description data, thereby changes the layout of said object(s) in the display screen of said reception terminal.

4. The data processing apparatus according to claim 3, wherein said change means changes a translation field of the object(s) included in said first scene description data in correspondence with the size of the display screen of said reception terminal.

5. The data processing apparatus according to claim 1, wherein said change means changes a fileName field of the object(s) included in said first object description data, thereby changes the object displayed in the display screen of said reception terminal.

6. The data processing apparatus according to claim 5, wherein said change means changes a fileName field of the object(s) included in said first object description data in correspondence with type of said reception terminal.

7. The data processing apparatus according to claim 1, wherein said multimedia data is in conformity with the MPEG-4 system.

8. The data processing apparatus according to claim 1, wherein said scene description data is described in BIFS.

9. The data processing apparatus according to claim 1, wherein said object includes a still image, a moving image, a CG, and a text.

2. A data processing apparatus for delivering coded multimedia data to a reception terminal connected to the apparatus via a network, comprising:

analysis means for receiving device information of said reception terminal and analyzing type and capability of said reception terminal;

change means for changing first object description data and first scene description data constructing said multimedia data in accordance with the result of analysis by said analysis means, thereby changing object(s) constructing said multimedia data and a layout of the object(s) in a display screen of said reception terminal and generating second object description data and second scene description data; and

generation means for generating a coded bit stream of the object(s) in correspondence with the result of analysis by said analysis means,

wherein said second object description data and said second scene description data are encoded, and wherein the result of coding is multiplexed with the coded bit stream of the object(s) generated by said generation means thereby coded multimedia data is generated, further wherein the coded multimedia data is delivered to said reception terminal.

10. A data processing method for delivering coded multimedia data to a reception terminal connected to the apparatus via a network, comprising:

an analysis step of receiving device information of said reception terminal and analyzing type and capability of said reception terminal;

a change step of changing first object description data and first scene description data constructing said multimedia data in accordance with the result of analysis in said analysis step, thereby changing object(s) constructing said multimedia data and a layout of the object(s) in a display screen of said reception terminal and generating second object description data and second scene description data; and

a selection step of selecting a coded bit stream of the object(s) from predetermined storage device in correspondence with change in said change step,

wherein said second object description data and said second scene description data are encoded, and wherein the result of coding is multiplexed with the coded bit stream of the object(s) selected by said selection means thereby coded multimedia data is generated, further wherein the coded multimedia data is delivered to said reception terminal.

12. A program for making a computer execute the data processing method according to claim 10.

14. A storage medium holding the program according to claim 12.

11. A data processing method for delivering coded multimedia data to a reception terminal connected to the apparatus via a network, comprising:

an analysis step of receiving device information of said reception terminal and analyzing type and capability of said reception terminal;

a change step of changing first object description data and first scene description data constructing said multimedia data in accordance with the result of analysis in said analysis step, thereby changing object(s) constructing said multimedia data and a layout of the object(s) in a display screen of said reception terminal and generating second object description data and second scene description data; and

a generation step of generating a coded bit stream of the object(s) in correspondence with the result of analysis in said analysis step,

wherein said second object description data and said second scene description data are encoded, and wherein the result of coding is multiplexed with the coded bit stream of the object(s) generated by said generation means thereby coded multimedia data is generated, further wherein the coded multimedia data is delivered to said reception terminal.

13. A program for making a computer execute the data processing method according to claim 11.

15. A storage medium holding the program according to claim 13.